Autosys

- Add more pytest tests
- Update pytest and tox config

- Change to pyproject.toml
- Change to poetry instead of setup.py
- Move project metadata to pyproject.toml
- Move mypy settings to pyproject.toml

- Remove support for python < 3.8
- package_metadata has more info and utilities
- Begin support for PEP 590, Vectorcall: a fast calling protocol for CPython
- Begin C and C++ extension support

- Refactor Setup to include sphinx and package_metadata
- streamline CI path (add Azure and Github hooks)
- added twine_setup script file to run twine outside of setup.py

- Refactor all code by category
- Continue Python 3.9 support testing
- Finalize Python 3.8 support
- Remove support for python < 3.8
- Python 3.8 features driving the deprecation of Python < 3.8
- Parallel filesystem cache for compiled bytecode
- f-strings support a handy = specifier for debugging
- multiprocessing can now use shared memory segments
- Typing-related: PEP 591 (Final qualifier)
- PEP 586 (Literal types)
- PEP 589 (TypedDict)
- and, yes, just a few (PEP 572) assignment expressions

- Begin Python 3.9 support
- Continue Python 3.8 support
- Deprecate support for python < 3.8